FSCT hosts spring VLC on Mechanical Properties of Coatings.The FSCT FSCT Federation of Societies for Coating Technology FSCT Fire Support Control Terminal continues its 2004 schedule of Virtual Learning Conferences with a two-part course on "Mechanical Properties of Coatings." Scheduled for June 3 and June 10, the online conferences are presented by Loren Hill, Coatings Consultant. These courses may be taken separately or as a series. Mechanical Properties I: Fundamentals of Property Determinations in Coatings June 3: 2:00-3:30 pm (ET) Film properties depend on the chemical nature of the binder used to form the film and on the reinforcing effects created by interactions between pigment particles and the binder. Fundamental concepts used in all branches of material science, of course, apply to coatings as well. The following concepts are reviewed and their influence on coatings performance discussed: viscoelasticity Viscoelasticity, also known as anelasticity, is the study of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like honey, resist shear flow and strain linearly with time when a stress is applied. , glass transition temperature The glass transition temperature is the temperature below which the physical properties of amorphous materials vary in a manner similar to those of a solid phase (glassy state), and above which amorphous materials behave like liquids (rubbery state). , brittle/ductile transition temperature, creep and recovery, stress relaxation Stress relaxation describes how polymers relieve stress under constant strain. Because they are viscoelastic, polymers behave in a nonlinear, non-Hookean fashion.[1] , crosslinking, and network formation. ASTM ASTM abbr. American Society for Testing and Materials and other agencies have developed standard test methods on coatings for hardness, flexibility, impact resistance, abrasion resistance, and scratch and mar resistance. Results of these tests, called performance properties, are discussed. Mechanical Properties II: Test Methods and Property/Property Relationships June 10: 2:00-3:30 pm (ET) A variety of mechanical tests that are specific to coatings have been developed to determine properties such as hardness, flexibility, toughness, impact resistance, abrasion resistance, and scratch and mar resistance. Focus is on the standard test methods approved by ASTM for many of these performance properties. Needs for improved performance in these tests for various end uses, such as mar resistance for auto topcoats and post-formability for most coil coatings, are discussed. Designing binder structures for improved performance is currently limited, in many cases, by insufficient understanding of the relationships between fundamental properties and performance properties. The current state of knowledge of these critical property/property relationships is presented. Learning Objectives: * Understand basic concepts that bring order to structure/property relationships * Provide examples that demonstrate how property knowledge has resulted in improved performance * Describe how coatings performance properties as determined by ASTM Standard Test Methods are related to basic properties as determined by stress-strain curves and by dynamic mechanical analysis * Understand the current state of knowledge of critical property/property relationships * Provide examples from many coatings types (automotive coatings, beverage can A beverage can is most often an aluminium can manufactured to hold a single serving of a beverage. Overview The early metal beverage can was made out of steel (similar to a tin can) and had no pull-tab. coatings, coil coatings, architectural coatings, etc.) of use of recent advances in property understanding Course Instructor: Loren Hill received his B.S. in Chemistry from North Dakota State University North Dakota State University, at Fargo; land-grant and state supported; coeducational; chartered and opened 1890 as North Dakota Agricultural College, achieved university status in 1960. in 1961 and Ph.D. from the Pennsylvania State University Pennsylvania State University, main campus at University Park, State College; land-grant and state supported; coeducational; chartered 1855, opened 1859 as Farmers' High School. in 1965. He was a faculty member at NDSU NDSU North Dakota State University where he taught physical chemistry from 1965 to 1971 and coatings chemistry from 1971 to 1980. Dr. Hill left academia in 1980 to join Monsanto as a Science Fellow. He was promoted to Senior Fellow in 1987 and continued in this position at Solutia Inc., a spin-off from Monsanto, from 1997 to 1999. Dr. Hill is currently a consultant in the areas of structure/property relationships of coatings and determination and control of crosslink density in thermoset A polymer-based liquid or powder that becomes solid when heated, placed under pressure, treated with a chemical or via radiation. The curing process creates a chemical bond that, unlike a thermoplastic, prevents the material from being remelted. See thermoplastic. coatings. He has been the recipient of two awards for outstanding research in coatings: the FSCT Mattiello Memorial Lecture Award in 1991 and the ACS (Asynchronous Communications Server) See network access server. Roy W. Tess Award in 1998. Who Should Attend: These courses will benefit R & D personnel, technology managers, quality control/reliability engineers, technical market specialists, and technologists responsible for approving coatings for new end uses or replacing existing coatings. Registration Early Bird Fees: Register by May 27 for either course to receive the discounted rate of: $349 FSCT member; $399 nonmember. Regular Fees: After May 27, the registration fees are: $399 FSCT member; $449 nonmember. Only one fee is charged per location, regardless of how many participate. To register, contact FSCT, 492 Norristown Rd., Blue Bell, PA 19422-2350; 610.940.0777; fax: 610.940.0292; email: fsct@coatingstech.org. Visit www.coatingstech.org for more information. [ILLUSTRATION OMITTED] Piedmont Society, WCRG WCRG Wireless Communications Research Group (University of Wisconsin - Madison) WCRG Wessex Classical Riding Group (UK) , and University of North Carolina--Greensboro to Host Wood Coatings & Substrates September 10, 2004 UNC--Greensboro For information, contact Ron Obie, WCRG, 336.841.0264; fax: 336.841.0303; wcrgs@aol.com |
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